AT&T Wireless placed additional order with Grayson Wireless for E...
AT&T Wireless placed additional order with Grayson Wireless for Enhanced 911 wireless caller location technology that carrier already had been using with its TDMA network, terms not announced. Additional systems will be used for digital dual mode GSM/TDMA network…
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for rollout in parts of AT&T’s network, Grayson said. FCC recently approved $2 million consent decree with AT&T Wireless to resolve possible violation of E911 Phase 2 rules. Agreement doesn’t require AT&T Wireless to use Enhanced Observed Time Difference of Arrival (E-OTD) technology and carrier has said it was planning to use another caller-location system. E-OTD recently has come under criticism from public safety and other groups as beset with problems that they said were slowing E911 rollouts for GSM carriers. “This new order will provide to AT&T Wireless an FCC-compliant network-based dual- mode, dual-band 911 caller location technology that is compatible both with AT&T Wireless’s existing TDMA system and with the GSM network-overlay systems AT&T Wireless is currently installing,” Grayson said. AT&T Wireless has said it would continue to test E-OTD technology in some markets but because consent decree didn’t stipulate particular network-based location technology, it was free to use alternatives to meet deployment deadlines. Grayson said its Geometrix caller location system for E911 calls also could work with customers and roamers who used analog networks.